Sam Gardiner is taking over as captain of Knebworth Park Firsts after Charlie Randall stepped aside.
The Australian all-rounder will take charge for the weekend fixture as the side looks to reinvigorate its League One campaign.
Selectors feared the lacklustre start to the season put the Firsts in danger of a second relegation in two years.
There are promotions for Seconds captain Guy Warman, who blasted a scintillating century on Saturday, his deputy Alex Richmond and in-form all-rounder Shaun robinson.
Ed Wright will step up to the Second XI captaincy.
The full statement from playing chairman Adam Sergeant said: ‘At this halfway point of the season, the cricket committee has reviewed our performances on the field.
‘It is no secret the First team has struggled. To avoid the risk of a further successive relegation and the damage this would cause to the club and our future potential, we were collectively left with no option but to make some significant changes.
‘Firstly, Charlie Randall has decided to step aside as First XI captain and has been replaced by Sam Gardiner. I would like to thank Charlie for his dedication to what has been a difficult job over the last 18 months and look forward to him rediscovering his best form with both ball and ball, without the burden of captaincy weighing him down.
‘Secondly, Guy Warman and Alex Richmond, captain and vice-captain of the Second XI, will now be available for selection for the Firsts.
‘Both players are great “club men”, as is shown by their willingness to step up and make this change.
‘Guy and Alex will move to the First XI this weekend, alongside the in-form Shaun Robinson, but we reiterate that, as a club, we remain fully committed to doing all we can to helping the Second XI continue its excellent start to the year.
‘To this effect, the experienced Ed Wright will captain the Second XI this weekend, with support from Bret Painter. Thank you to Guy, Alex, Shaun, Ed and Bret for all stepping up.
‘Sean Carmody, Mark Folwell, David Mantle, Chris Johnson and Eddie Large all continue unaffected with their fantastic work in the Third, Fourth, Fifth and Sunday XIs.
‘At different times, all sides have suffered from poor availability, but this is now improving so we can be positive that each XI has a better chance of being settled week to week and that the lower sides can compete on a more even playing field with their opposition.
‘The changes detailed above are all very positive, are not undertaken lightly and certainly not without considerable consultation with the individuals involved, so please, get fully behind what we are doing.
‘Here’s to a highly successful and above all, enjoyable, second half of the league season!’